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/**
* SPDX license identifier: MPL-2.0
*
* Copyright (C) 2012, BMW AG
*
* This file is part of GENIVI Project AudioManager.
*
* Contributions are licensed to the GENIVI Alliance under one or more
* Contribution License Agreements.
*
* \copyright
* This Source Code Form is subject to the terms of the
* Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
* this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
*
* \author Christian Linke, christian.linke@bmw.de BMW 2011,2012
*
* \file CAmWatchdog.cpp
* For further information see http://www.genivi.org/.
*
*/
#include "CAmWatchdog.h"
#include <cassert>
#include <cstdlib>
#include <stdexcept>
#include "audiomanagerconfig.h"
#include "CAmDltWrapper.h"
#ifdef SYSTEMD_FOUND
#include <systemd/sd-daemon.h>
#else
#include "sd-daemon.h"
#endif
namespace am
{
CAmWatchdog::CAmWatchdog(CAmSocketHandler* CAmSocketHandler) :
TimerCallback(this, &CAmWatchdog::timerCallback), //
mpCAmSocketHandler(CAmSocketHandler), //
mHandle(0) //
{
assert(mpCAmSocketHandler);
//first retrieve the timeout interval
int watchdogTimeout = 0;
char* wusec=getenv("WATCHDOG_USEC");
if (wusec)
watchdogTimeout=atoi(wusec);
if (watchdogTimeout > 0)
{
timespec timeout;
//calculate the half cycle as the right interval to trigger the watchdog.
timeout.tv_sec = (watchdogTimeout / 2) / 1000000;
timeout.tv_nsec = ((watchdogTimeout / 2) % 1000000) * 1000;
logInfo("CAmWatchdog::CAmWatchdog setting watchdog timeout:", watchdogTimeout, "us. Notification set to:",
timeout.tv_sec, "sec and", timeout.tv_nsec, "ns");
//add the timer here
if (mpCAmSocketHandler->addTimer(timeout, &TimerCallback, mHandle, NULL))
{
logError("CAmWatchdog::CAmWatchdog failed to add timer");
throw std::runtime_error("CAmWatchdog::CAmWatchdog failed to add timer");
}
}
else
{
logInfo("CAmWatchdog::CAmWatchdog watchdog timeout was ", watchdogTimeout, " museconds, no watchdog active");
}
}
CAmWatchdog::~CAmWatchdog()
{
//remove the timer again.
mpCAmSocketHandler->removeTimer(mHandle);
}
void CAmWatchdog::timerCallback(sh_timerHandle_t handle, void* userData)
{
(void) userData;
int error(sd_notify(0, "WATCHDOG=1"));
if (error < 0)
{
logError("CAmWatchdog::timerCallback could not reset watchdog, error ", error);
throw std::runtime_error("CAmWatchdog::timerCallback could not reset watchdog");
}
mpCAmSocketHandler->restartTimer(handle);
}
void CAmWatchdog::startWatchdog()
{
int error(sd_notify(0, "READY=1"));
if (error < 0)
{
logError("CAmWatchdog::startWatchdog could not start watchdog, error ", error);
throw std::runtime_error("CAmWatchdog::startWatchdog could not start watchdog");
}
logInfo("READY=1 was sent to systemd");
}
}
/* namespace am */
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